What’s Vulnerable › Vulnerabilities

CVE-2020-1634: Junos OS: High-End SRX Series: Multicast traffic might cause all FPCs to reset.

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-08 · updated 2026-06-17
• Weakness: CWE-190

Description

On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.

Affected products

• Juniper Junos OS: 12.3x48, 12.3x48-d10, 12.3x48-d15, 12.3x48-d20, 12.3x48-d25, 12.3x48-d30 (+11)

References

• https://kb.juniper.net/JSA11014
• https://kb.juniper.net/JSA11014

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